HT37Q70/HT37Q60/HT37Q50/HT37Q40/HT37Q30/HT37Q20

　　Operating voltage:

　　3.6V~5.5V (HT37Q70/60)

　　3.3V~5.5V (HT37Q50/40)

　　2.4V~5.5V (HT37Q30/20)

　　Operating frequency: typical 11.059MHz

　　Oscillation modes for the Oscillator clock

　　fOSC: Crystal (11.059MHz)

　　1-pin RC oscillation typ. 11.059MHz

　　Built-in 8-bit MCU (HT-8) with 320x8 bits RAM

　　Built-in 32Kx16-bits to 256Kx16-bits ROM for program/data shared

　　Eight-level subroutine nesting

　　Two 8 bit timer and one 16 bit timer

　　Watchdog timer

　　Power-down and Wake-up features for power saving

　　operation

　　16-bit table read instructions for any bank/page read

　　Support 16 to 28 bidirectional I/O lines

　　Integrated 1-ch mono 16-bit DAC converter

　　Integrated power Amplifier

　　Four channel polyphonic synthesizer

　　Low voltage reset (Tolerance ±10%)

　　External interrupt INTB

　　External 2 Timer clock input

　　4 or 8 touch switch input

　　ADPCM decoder

　　Bit manipulation instructions

　　63 powerful instructions

　　All instructions in 1 or 2 machine cycles